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When the temperature is high,Hot melt adhesive granulesThe surface will slightly soften and adhere to each other, with severe cake formation throughout the bag, blocked feeding ports, and uneven adhesive glue. This is not a quality issue, the main reason is that the “storage temperature” and “softening point” are not aligned.
| Scene | Suggestion |
|---|---|
| Room temperature warehouse, ordinary production line | Select conventional EVA pellets with a softening point above 85 ℃ |
| Workshop without air conditioning, high temperature in summer | Choose high softening point (95 ℃+) or PO type for better temperature resistance |
| Slight clumping has occurred | After sieving and manually breaking apart, use it as soon as possible to avoid material jamming in the melting tank |
Sunlife hot melt adhesive provides high softening point books, magazines, and packaging pellets for the high temperatures in southern summer. Guangzhou Sunlife Trading can recommend grades according to your warehouse conditions to reduce clumping from the source.
Q1: Can it still be used if it’s clumped?
Slight clumping can be used for sieving; Hard cake like material is recommended to be discontinued to prevent blockage.
Q2: Is it the same reason for becoming brittle in winter?
On the contrary, winter is characterized by low temperatures and brittleness, while summer is characterized by high temperatures and softness, both of which are related to the softening point.
Q3: Is it feasible to temporarily store ice in the freezer?
Short term cooling is possible, but when removing it, it should be warmed and moisture-proof to avoid condensation water entering the adhesive.
You will find hot melt adhesive everywhere in your daily life. From the furniture you sit on to the corrugated cardboard boxes containing mail at the local post office, it is not difficult to find items bonded with this popular adhesive. Companies that work with wood, fabric and foam plastics, shoe manufacturers, bookbinders and plastic […]
Conclusion The amount of glue used is small, and there are many varieties (books, packaging, and quick printing require a little each). Buying each item alone cannot meet the minimum order quantity, and the unit price is high. Using “mixed batch and combined order” – combining multiple categories of orders from the same supplier, or […]
In order to improve the quality of board edge sealing in the furniture industry, more and more manufacturers are upgrading edge sealing from EVA technology to PUR technology. PUR hot melt adhesive undoubtedly has better strength and heat and water resistance than EVA, and its final bonding performance is surplus for indoor furniture. Therefore, […]
What is hot melt adhesive? Hot melt adhesive is the name of any polymer based adhesive applied in a molten state. The application of adhesives is usually through industrial glue guns, which act by triggering actions or finger pressure. Due to its versatility, hot melt adhesive is used in various environments, including packaging, binding, carton […]
